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A106 Pipe
A106 Pipe
A106 is a seamless carbon steel tube. It is a standard type under the American Standard ASTM A106 and is sometimes called ASME SA106 pipe. This seamless carbon steel pipe is designed specifically for high-temperature, high-pressure service. It comes in three grades: A, B, and C. ASTM A106 Grade B is the most common, with mechanical properties similar to ASTM A53 Grade B and API 5L Grade B. It is often used in oil and gas, boiler superheat lines, and other applications where high-temperature, high-pressure fluids and gases need to be transported.
Product Specifications
| Item | Grade A | Grade B | Grade C |
| Chemical Composition(%) | |||
| Carbon(C) | ≤0.25 | ≤0.30 | ≤0.35 |
| Manganese(Mn) | 0.27-0.93 | 0.29-1.06 | 0.29-1.06 |
| Phosphorus(P) | ≤0.035 | ≤0.035 | ≤0.035 |
| Sulfur(S) | ≤0.035 | ≤0.035 | ≤0.035 |
| Silicon(Si) | ≥0.10 | ≥0.10 | ≥0.10 |
| Copper(Cu) | ≤0.40 | ≤0.40 | ≤0.40 |
| Nickel (Ni) | ≤0.40 | ≤0.40 | ≤0.40 |
| Chromium(Cr) | ≤0.40 | ≤0.40 | ≤0.40 |
| Molybdenum(Mo) | ≤0.15 | ≤0.15 | ≤0.15 |
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More Details
ADVANTAGES/DISADVANTAGES
High strength and high pressure resistance, temperature resistance up to 400℃
INDUSTRIES
Widely used in the petroleum, chemical industry, electric power, boiler manufacturing, and other heavy industries.
APPLICATIONS
Mainly used for high temperature fluid transportation and pressurized structural parts, applicable temperature -29~425℃.
MACHINING
Easy to process but needs to use carbide tools, and control cutting speed to prevent wear.
WELDING
Excellent welding performance, need to clean the bevel before welding, heat treatment is recommended after welding.
Flattening tests
A test where pipe samples are flattened to a set distance to evaluate their ability to resist plastic deformation without cracking or breaking.
Hydrostatic tests
A pressure test in which pipes are subjected to water at specified pressures to verify their pressure resistance and leak tightness, usually maintained for at least 5 seconds.
Nondestructive electric tests
Includes eddy current and flux leakage testing methods that utilize electromagnetic induction to identify surface and near-surface defects.
Ultrasonic tests
Uses high-frequency sound waves to detect internal flaws, especially effective for identifying wall thickness differences and lamination defects.
Eddy current tests
An electromagnetic testing method for detecting surface and near-surface defects, suitable for rapid inline inspection.
